Oil prices climbed on Friday, heading for a fourth weekly gain, driven by concerns over tighter supply following U.S. sanctions on Russian oil producers and signals from a Federal Reserve official of potential interest rate cuts.
Brent crude futures rose 13 cents, or 0.2%, to $81.42 per barrel by 0113 GMT, after declining 0.9% in the previous session. U.S. West Texas Intermediate crude futures were up 27 cents, or 0.3%, to $78.95 a barrel after dropping 1.7% on Thursday.
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